the ultrastructure of the cells, na+, k+-atpase activity and immunolocalization were examined in the barnchial chamber of libellula lydia (drury, 1773) larvae. na+,k+-atpase activity and localization were performed through biochemical techniques and immunofluorescence light microscopy using a mouse monoclonal antibody iggα5, respectively. the branchial chamber possesses six pair gills lamellae ...

Apis dorsata is known as a forest bee that very productive in producing honey. These bees can make nest combs only by relying on tree branches or branches. This study aims to identify the type of plant where nests natural Lalang Village, Meliau District, Sanggau Regency. research was conducted using survey method through interviews with respondents and site surveys measure height, diameter, bra...

forty eight species of odonata families, including libellulidae (23 species), aeschnidae (7species), gomphidae (5 species), cordulegastridae (1 species) from suborder anisoptera and euphaeidae (1species), calopterygidae (1 species), lestidae (3 species), platycnemididae (1 species) and coenagrionidae (6species) from suborder zygoptera were collected from 46 sampling sites in iran between early ...

Aeshna shennnong sp. nov. (holotype male: Dajiuhu national wetland park in Shennongjia National Nature Reserve, Shennongjia City, Hubei Province, China, 28. VIII. 2013) is described, illustrated and compared with its most similar congener, A. petalura Martin, 1908. The holotype will be deposited in the Collection of Aquatic Animals, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan ...

Interannual variation in seasonal weather patterns causes shifts in the relative timing of phenological events of species within communities, but we currently lack a mechanistic understanding of how these phenological shifts affect species interactions. Identifying these mechanisms is critical to predicting how interannual variation affects populations and communities. Species' phenologies, par...

Natural landscapes of Latin America, such as the Cerrado biome, are increasingly changing due to conflicting development models between economic growth and biodiversity conservation. In cases total or partial suppression natural vegetation, more sunlight reaches streams, leading changes in Odonata assemblages. Due their thermoregulation characteristics, proportion suborder Anisoptera tends incr...

En este trabajo se estudian dos especies de gonfidos (Odonata, Anisoptera) encontradas en los yacimientos calizas litograficas del Cretacico inferior España. Una estas especies, llerdaegomphus pallerolae (Gómez), es conocida Montsec (Provincia Lleida) y ahora redescribe; la segunda, torcae, una nueva especie encontrada el yacimiento Las Hoyas Cuenca). Ambas son estudiadas comparadas con resto a...

Community assembly theory is founded on the premise that the relative importance of local environmental processes and dispersal shapes the compositional structure of metacommunities. The species sorting model predicts that assemblages are dominated by the environmental filtering of species that are readily able to disperse to suitable sites. We propose an ecophysiological hypothesis (EH) for th...

High-speed movies of dragonflies turning in flight on flexible tethers show that there are two distinct modes of turning. In the 'conventional' mode, dragonflies use left-right asymmetries in the wing stroke amplitude, and occasionally in the angle of attack, to produce more lift and thrust on one side than the other. This causes the animal to roll into a bank, so that the lift vector has a sid...